{
  description = "Relay Prometheus alerts to ntfy.sh";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-24.05";
    flake-utils.url = "github:numtide/flake-utils";
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
  };

  outputs = { self, nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        goModule = import ./default.nix;
        name = "alertmanager-ntfy";
        version = "1.0.0";
      in {
        packages = rec {
          alertmanager-ntfy = goModule;

          container = pkgs.dockerTools.buildImage {
            inherit name;
            tag = version;
            created = "now";
            copyToRoot = pkgs.buildEnv {
              name = "root-env";
              paths = [ alertmanager-ntfy ];
            };
            config.Cmd = [ "${alertmanager-ntfy}/bin/alertmanager-ntfy" ];
          };

          mock-hook = pkgs.writeScriptBin "mock-hook" ''
            #!${pkgs.stdenv.shell}
            ${pkgs.curl}/bin/curl -X POST -d @mock.json http://$HTTP_ADDRESS:$HTTP_PORT
          '';
        };

        apps = rec {
          mock-hook = flake-utils.lib.mkApp { drv = self.packages.${system}.mock-hook; };
          alertmanager-ntfy = flake-utils.lib.mkApp { drv = self.packages.${system}.alertmanager-ntfy; };
          default = alertmanager-ntfy;
        };

        nixosModules.default = ({ pkgs, ... }: {
          imports = [ ./module.nix ];
          nixpkgs.overlays = [
            (self: super: {
              alertmanager-ntfy = self.packages.${system}.alertmanager-ntfy;
            })
          ];
        });
      }
    );
}